.page-not-found {
    max-width: 500px;
    margin: 0 auto;
    margin-top: 50px;
    padding: 40px;
    border: 1px solid #c8c8c8; 
    text-align: center;   
}

.page-not-found .title {
    font-size: 50px;
    letter-spacing: 10px;
    margin-bottom: 10px;
}

.page-not-found .desc {
    font-size: 20px;
    margin-bottom: 20px;
}

.go-back-btn {
    min-width: 160px;
}